Sandal boot



FIG. 1 is a perspective view of the left side of a sandal boot, showing my new design therefor, the right side being a mirror image thereof;

FIG. 2 is a front perspective view of the same sandal boot;

FIG. 3 is a back view of the same sandal boot; and,

FIG. 4 is a top view of the same sandal boot. 

The ornamental design for a sandal boot, as shown and described. 